arithmetic
nounfeminine/ɐ.ɾi.ˈtmɛ.ti.kɐ/medium
a·rit·mé·ti·ca
Definition
The branch of mathematics dealing with the properties and manipulation of numbers and basic operations (addition, subtraction, multiplication, division).
He is very good at mental arithmetic.
Arithmetic is taught in primary school.
Common collocations
mental arithmeticarithmetic meanarithmetic progressionbasic arithmetic
Etymology
Do latim 'arithmetica', por sua vez do grego 'arithmētikḗ' (téchnē) (a arte de contar).